OpenSSL 1.0.2i, Cloudflare ChaChaPoly Configure Patch

README.md

OpenSSL 1.0.2i ChaCha Poly Configure Patch

Cloudflare's OpenSSL patch for ChaChaPoly doesn't apply cleanly on OpenSSL 1.0.2i. This minor patch fixes it:

cd openssl-1.0.2i
wget https://gist.githubusercontent.com/charlesportwoodii/9e95c6a4ecde31ea23c17f6823bdb320/raw/a02fac917fc30f4767fb60a9563bad69dc1c054d/chacha.patch
patch < chacha.patch

chacha.patch

--- Configure.old	2016-09-22 10:44:13.323084391 -0500
+++ Configure	2016-09-22 10:44:47.900791682 -0500
@@ -1562,6 +1562,14 @@
 $bf_obj=$bf_enc		unless ($bf_obj =~ /\.o$/);
 $cast_obj=$cast_enc	unless ($cast_obj =~ /\.o$/);
 $rc5_obj=$rc5_enc	unless ($rc5_obj =~ /\.o$/);
+if ($chapoly_obj =~ /\.o$/)
+       {
+       $cflags.=" -DCHAPOLY_x86_64_ASM";
+       }
+else
+       {
+       $chapoly_obj=$chapoly_enc;
+       }
 if ($rc4_obj =~ /\.o$/)
 	{
 	$cflags.=" -DRC4_ASM";